What is heavy water, and is it safe to drink? Heavy water, or deuterium oxide, has some pretty important scientific applications. But what would happen to your body if you actually drank it? Hosted by Hank Green.

Be careful with your wool. Unless you want a nice piece of felt with some holes in it.

If you're flying on a plane in a thunderstorm, you should be more worried about the wind than the lightning.

You may have had an ultrasound before, and wondered what that gel does. Well, that weird alien goop has a purpose, and it has to do with being like our weird human skin.

Can you imagine a cup of tea that doesn't obey the laws of physics? One that pours out of the bottom of your cup while crawling up the sides to the top? Join Hank Green for a fun new SciShow super episode all about superfluids!

Almost everyone has a scar that tells a story, but have you ever wondered why exactly scars form in the first place?

Jessi and Augusto from Animal Wonders talk with Hank about how they got their really cool jobs. Plus they introduce Hank to a Mali uromastyx!

Humans are great at creating, and solving, problems. Hank talks with Gina McCarthy about the biggest public health problem we face today: climate change. Gina McCarthy is the Director of C-CHANGE (Center for Climate, Health and the...

Many people assume that fish are less intelligent than mammals, but it turns out that isn’t true at all - they are actually way smarter than you probably give them credit for.

High elevations can be a problem for humans. Since the air is thinner, you get less oxygen with every breath, leading to all kinds of negative side effects. But there are millions of people around the world who spend their whole lives at...

From a blacksmith's son, to one of the most repeated names in physics textbooks, Michael Faraday epitomized the spirit of scientific exploration

We know modern day healthcare to be a world of expensive premiums, long wait times and frustrating hospital bills. However health care has existed long before insurance premiums and online portals! Curious about when healthcare for...

Believe it or not, that cute bear bottle has serious bacteria fighting power—but how? Join Hank Green for a new episode of SciShow all about the amazing properties of honey!

Can having Herpes actually have benefits? While herpes viruses cause harmful or annoying afflictions like chickenpox and cold sores, there’s also evidence it can help your immune system fight unrelated attackers. Join Olivia Gordon for a...

This week on SciShow News: Animals! New research has found how dogs actually listen to us in more complex ways than you probably thought, and also figured out how a kind of pufferfish gets its puff up.

The chemistry behind film photography is pretty fascinating. How do film cameras help us turn light into a physical image?

Snorkelers, surfers, divers. They all use them… wetsuits! So how do they work to keep you warm? It turns out layers of materials, and water itself!

We all know turtles live an amazingly long time, but what's their secret? And can we apply it to humans?

Honey bees may be small, but they manage to survive some pretty big disasters. Whether it’s hurricanes, wildfires, or even volcanoes, honey bees seem to have a plan for everything.

New research suggests climate change in the past might have helped dinosaurs spread across the world. And modern climate change is revealing some of the things they left behind.

Table saws, while quite useful for woodworking, are also dangerous machines, which is why some incredible safety mechanisms have been invented to help you remain one with your body parts. Hosted by: Stefan Chin

What killed George Washington? Turns out it was probably related to the bloodletting and other 18th-century medicine his doctors applied.

Is there actually a cure for cancer? A universal cure would be a truly historic achievement in medicine, and it seems that scientists may have found it... by accident. Watch this new episode of SciShow and find out more! Hosted by: Hank...

We usually think of 'hacking' as a bad thing, but scientists are working on ways to hack the brain that will greatly benefit people with prosthetics, and maybe someday people with paralysis.